The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2011
Filed:
May. 13, 2008
Steven John Mackowski, Jandakot, AU;
Raul Raiter, Dianella, AU;
Karin Helene Soldenhoff, Earlwood, AU;
Elizabeth Margaret Ho, Kensington, AU;
Steven John Mackowski, Jandakot, AU;
Raul Raiter, Dianella, AU;
Karin Helene Soldenhoff, Earlwood, AU;
Elizabeth Margaret Ho, Kensington, AU;
Arafura Resources Limited, Perth, AU;
Abstract
A process for recovering rare earth elements from a composite ore containing rare earth elements that includes a monazite group mineral and an apatite mineral, includes pre-leaching the composite ore with an acid so as to substantially dissolve the apatite mineral into the leach liquor and precipitating rare earth elements from the pre-leach liquor. The residue of the pre-leaching step is subjected to an acid bake treatment, followed by a water leach, to produce a water leach liquor rich in rare earth elements. Impurities including thorium and iron are separated from the water leach liquor by introducing a neutralizing additive to the water leach liquor rich in rare earth elements, and rare earth elements are precipitated from the post-neutralization liquor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile